Machine for treating skins and the like



INV ENT OR.

3 Sheets-Sheet 1 B. C. NELSON MACHINE FOR TREATING sxINs AND THE LIKE Filed July 1s, 1942 CECC u Dumm DDUDDDDDDUDU GDDDDDDDDDDD DDUDUDDDDGDD UDUDUn- UDDDDUDQ I2 UDDDDDDUDDDDDEJR:

DDDUDUUUDDDDDQI- DDDEDDDUDDDD DDDUDUUDDDDEC UDDDDDDDUUDDDS DDDUUDDDDDU DDDDDDD GDDDDDDDDCCEE UDDDDDDDDDDDQ DUDDDDDDDUQ.: UDDDDDDD DDDDDDUDDDDD DDDDDDDDDDDD DDDUUUDDDDU DDUDDUDDDDD UDDDDUDDDDD 333333333333 May 22, 1945.

BERNARD C. NELSON BY l ATTORNEY.

May 22, 1945. E. c. NELSON 2,376,500

MACHINE FOR TREATING SKINS AND THE LIKE Filed July 18, 1942 3 Sheets-Sheet 2 17E-5 ./6 /4 ff INVENTOR. BERNARD C. NELSON ATTORNEY.

May 22, 1945.

B. c. N ELsoN MACHINE FOR TREATING SKINS AND THE LIKE Filed July 18, 1942 3 Sheets-Sheet 3 mvENToR, BERNARD C; NELSON BY 7 ATTORNEY. 1

Patented May 22,'1945 MACHINE FOB TREATING SKINS AND THE LIKE Bernard'C. Nelson, Needham.'Mass Application July 18, 1942, Serial No. 451,461

3 Claims. Y (Cl. 69-27) This invention'relates to machines, for treating skins, and particularly to drums used for same.

Broadly, it is an object of my invention to provide a drum for a machine, for treating skins 'which will produce a smoother and better skin, at the same time give the hairs an improved luster.

A further object of my invention is to provide a drum for treatingskins with grooves which will cause the heat to be distributed evenly on the hairs oi' the skin to produce a better skin.

A further object of my invention is to provide a drum for a machine for treating skins so that the uniform heat provided by the drum will prevent the hairs of the skin from being singed.

Heretofore, drums have been used in connection with machines for treating skins which have a multiplicity of pins which in time become worn and have to be replaced. Such repairs slows production and is costly. With my new type of dunr such wearing parts are reduced to a. minimum and production will not be stopped because of necessary repairs to the drum.

With the above and other objects in View, the invention will be hereinafter more particularly described, and the combination and arrangements of parts will be shown in the accompanying drawings and pointed out in the claims which form a part of thisspecication.

Reference will now be had to the drawings. wherein like numerals of reference designate cor- Referringto the drawings, numeral I indicates a machine for treating skins and the like, comprising a frame II having a table I2 in which a blanket I3 is mounted, movable vertically.

An ironing drum Il, having a, hollow shaft I is rotatably mounted in bearings I6 above the table I2. The ironing drum Il can be provided with heating elements for gas or electricity,

whichever is most desirable and thermostatic means for automatically controlling the heat.

The frame II comprises a pair of parallel side walls I1, I1 'which have low front portions I8 and high rear portions I9. A pair of parallel bridge members 20 are mounted across the low portions responding parts throughout the several views,

in which:

Figure 1 is front elevational view of my ironing and stretching drum, showing the shaft broken away.

Figure 2 is a section taken through line 2-2 of Figure 1.

Figure 3 is a front elevational view of a skin treating machine showing the roller of Figure 1 in position.

Figure 4 is a side elevation of the machine shown in Figure 1.

Figure 5 is an enlarged fragmentary perspec- I8 and connected to the side Walls I1. I1 in unitaryrelation. The bridge members 20 have lnclined sides extending upwardly from the outer faces of the side walls I1, I1, terminating in brackets 2| on which the table I2 has been xed (not shown).

The rear portion of the table I2 is formed with a large rectangular opening in which the blanket I3 is mounted. A bar 22 extends across the rear of the rectangular opening, bar 23 extends across the front of the central part of table I2 with bar 24, slightly higher than bar 23 and placed between bars 22 and 23, all the bars being parallel to one another. The blanket I3 is rotatably mounted on bars 22, 23 and 24.

The rear portion of blanket` I3 is sloped downwardly toward the rear of the machine. The blanket I3 may be made of a sheet felt material. as shown at 25 or a suitable cloth and reinforced and supported by wire mesh belting 26 of the same width as the blanket I3, so that it assists.` in tautly supporting the blanket I3.

The means for lifting and lowering the blanket I3, comprise a link 21 which is pivotally connected by a pintle 28 to a bracket 29. The link 21 extends downward and rearward and pivotally connects with a lever 30. The front end of the lever 30 terminates in a pedal 3I by means of which the front end of the lever may be depressed.

The lever 30 is pivotally supported intermediate its ends on a pin 32 in lugs 33 extending from a bracket 34. Bracket 34 is secured to the side walls I1, I1 of the frame II. A spring 35 is con- ,nected between the bottom end of the link 21 and a stationary rod 36 on the frame and serves to maintain the blanket I3 in its lowered position. When the pedal 3| is depressed, the blanket I3 will move upwardlyinto engagement with the drum Il.

As shown in Figure 4, the bearings I8 are secured to the overhanging .portions Il of the frame II. The outer end of the hollow shaft Ii carries a pair of pulleys I1, $8 for contact with a belt; the pulley 31 being keyed to the hollow shaft and the pulley 38 being freely rotatably mounted on the hollow shaft. The hollow shaft may contain gas and the small openings are gas Iets for heating the interior of the roller (see Fig. 2). Any well known belt shifting mechanism may be used for shifting the belt from one pulley to the other. The ironing drum I4 may be covered with a dust and heat shield (not shown) and to prevent the excessive heat (if any) from reaching the skins placed upon the blanket I3.

As shown in Figures l, 2 and 5, the ironing drum I4 has a series of uniformly spaced paralleled circumferential grooves 39 crossed by paralleled longitudinal grooves 40 creating squares 4I as shown in Figure 5. During the rotation of the drum I4, the air is caused to circulate in grooves 39 and 40 and mix with the air heated by the heating means within the drum so that a more uniform and evenly distributed heat is continually applied to the hairs of a skin upon blanket I3. thus preventing singeing during the raising and stretching of the hairs of the skin being treated. The action of drum Ill will also produce a smoother and better fur.

As shown in Figure 2, the grooves 39 and 40 are cut into the surface of the drum it with straight walls so that the section appear rectangy ular. However, the longitudinal grooves may be V shaped, as shown in Figure 9, or both the longitudinal grooves and the circumferential grooves may be V-shaped (not shown) As shown. in Figures 6 and 7. the modied drum 42 has a plurality of substantially V shaped grooves 43, the apices being positioned in offset relation with the middle of the drum so as to cover the entire circumference of the drum with the grooves. As best seen in Figure the grooves 43 are of triangular cross section. each groove having a radially -positioned wall 4d and a Wall E positioned at an acute angle to the radial wall 44. The surface of the drum d2 has. in addition to the V shaped grooves 43, a series of parallel uniformly spaced circumferential grooves Il@ and a series of parallel longitudinal grooves di, spaced apart the' same 'distance as the circerential grooves. All these grooves during rotation of the drum 42 serve to circulate the heated air and ythe outer air within the grooves and to raise and stretch the hairs of a skin while an evenly distributed heat is applied.

Referring to Figure 8, the numeral 4l represents another modified drum very much like the drum shown in Figures 6 and 7, except that the longitudinal grooves 48 are uniformly spaced apart a lesser distance than the circumferential grooves 50; the large V shaped grooves 5I being similar to the V shaped grooves 43 of Figures 6 and 7. 0f course, the walls of grooves 49 and 50 may be V shaped. as shown in Figure 9.

I havefound that drums constructed like those shown in Figures 1, 6 and 8 will stand an exceptional wear, thus permitting the drum to remain in constant use so that production will not cease for necessary repairs.

It should be understood that the different drums illustrated in the drawings and described in the specification may be designed for application upon Aal1 of the well known machines for treating skins of different animals.

It is obvious that various changes and modications may be made in the details of construction without departing from the general spirit of the invention, as set forth in the appended claims. Iclaim:

l. A skin treating machine comprising a circular drum, heating means within said drum, said drum having a series of uniformly spaced parallel straight circumferential grooves crossed by a series of uniformly spaced parallel straight grooves, creating a uniform series of squares upon the outer surface.

2. A skin treating machine comprising a circular drum, heating means within said drum, said drum having a series of uniformly spaced `parallel straight circumferential grooves crossed I BERNARD c. NELSON. 

